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From: Lina Iyer <ilina@codeaurora.org>
To: agross@kernel.org, bjorn.andersson@linaro.org, swboyd@chromium.org
Cc: linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
	rnayak@codeaurora.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, dianders@chromium.org,
	mkshah@codeaurora.org, Lina Iyer <ilina@codeaurora.org>
Subject: [PATCH V2 4/4] drivers: qcom: rpmh-rsc: remove redundant register access
Date: Mon, 22 Jul 2019 15:53:40 -0600
Message-ID: <20190722215340.3071-4-ilina@codeaurora.org> (raw)
In-Reply-To: <20190722215340.3071-1-ilina@codeaurora.org>

Since drv->tcs_in_use is updated when the DRV_STATUS is updated, we
could simply use the former to determine if the TCS is idle or not.
Therefore, remove redundant TCS register read.

Signed-off-by: Lina Iyer <ilina@codeaurora.org>
---
 drivers/soc/qcom/rpmh-rsc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index add5e84751c9..b04cd2d2910c 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -93,8 +93,7 @@ static void write_tcs_reg_sync(struct rsc_drv *drv, int reg, int tcs_id,
 
 static bool tcs_is_free(struct rsc_drv *drv, int tcs_id)
 {
-	return !test_bit(tcs_id, drv->tcs_in_use) &&
-	       read_tcs_reg(drv, RSC_DRV_STATUS, tcs_id, 0);
+	return !test_bit(tcs_id, drv->tcs_in_use);
 }
 
 static struct tcs_group *get_tcs_of_type(struct rsc_drv *drv, int type)
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


  parent reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-22 21:53 [PATCH V2 1/4] drivers: qcom: rpmh-rsc: simplify TCS locking Lina Iyer
2019-07-22 21:53 ` [PATCH V2 2/4] drivers: qcom: rpmh-rsc: avoid locking in the interrupt handler Lina Iyer
2019-07-23 20:11   ` Stephen Boyd
2019-07-24 14:52     ` Lina Iyer
2019-07-24 19:37       ` Stephen Boyd
2019-07-24 20:36         ` Lina Iyer
2019-07-24 23:27           ` Doug Anderson
2019-07-25 15:18             ` Lina Iyer
2019-07-25 15:39               ` Doug Anderson
2019-07-29 19:01                 ` Lina Iyer
2019-07-29 20:56                   ` Stephen Boyd
2019-07-30 17:29                     ` Lina Iyer
2019-07-22 21:53 ` [PATCH V2 3/4] drivers: qcom: rpmh: switch over from spinlock irq variants Lina Iyer
2019-07-23 18:24   ` Stephen Boyd
2019-07-22 21:53 ` Lina Iyer [this message]
2019-07-23 18:22 ` [PATCH V2 1/4] drivers: qcom: rpmh-rsc: simplify TCS locking Stephen Boyd
2019-07-23 19:21   ` Lina Iyer
2019-07-23 20:18     ` Stephen Boyd
2019-07-24 14:54       ` Lina Iyer
2019-07-24 18:32         ` Stephen Boyd
2019-07-24 19:36           ` Lina Iyer

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